We're seeing a lot of the Let's make a "List of X" problem on new Stack Exchange 2.0 sites. Like so.
Our engine is absolutely brilliant at surfacing these questions, and they can have some utility ... but they're not really what we want -- they tend to be polls and copy-pasted content, not original contributions.
In the worst case they're like the "Favorite Programming Cartoon" question. In the best case they're like the "New Programming Jargon" question.
The rule I've used in the past in these grey areas is ...
can an average user learn something from this question?
... which is even murkier here. If it's just a list of products with no explanation, then no. If it contains detailed information about the features and how they can be used, and why you might want to choose one over the other, then yes.
"How?" and "Why?" has more lasting value than a bunch of product-feature bullet points or enumerated list, no matter how extensive.
So, I propose a new global close reason across all sites:
closed as "List of X" by {user1}, {user2}, {user3} 1 hour ago
This question asks for the community to make a list of items, without giving enough detailed context to provide an explanation of "why" or "how".
Your thoughts? Copyedits? Ideas?